Marvin h



M. H. DAVIS.

ELECTRIC LICHT SOCKET.

APPLICATION man oms. 1919.

1,41 1 ,002. Patented Mar. 28, 1922.

PTE?

H. DAVIS, OF DOUGLAS, ARIZONA.

ELECTRIC-LIGHT SOCKET.

Minoes.'

Specification of Letters Patent. Patented Billar'. 2S, 1922.

Application led December 3, 1919. Serial No. 342,102.

To @ZZ whom t .may concern:

Beit known that I, MARVIN H. Davis, citizen of the United States, residin at Douglas, in the county of Cochise and tate of Arizona, have invented certain new and useful Improvements in Electric-Light Sockets, ot which the following is a speciication.

This invention relates to an improved electric light socket and has, as one of its principal objects to provide a device oit' this character wherein a circuit through the socket may, by simply pulling upon a lamp carried thereby, be closed for energizing the lamp.

AThe invention has as a further object to provid@ a socket wherein the lamp may, by simply pulling thereon, be also extinguished.

A 'further object of the invention is to provide a socket employing a base formed of sections slidably connected for operating a'switch and wherein by shifting one section with respect to the other, the switch may be either opened or closed.

And the invention has as a still further object to provide a socket which will be neat and attractive in appearance and wherein all of the working parts will be enclosed within the casing employed.

Other and incidental objects will appear hereinafter.

In' the drawings;

Figure 1 is a side elevation ot my improved soclret, the casing and insulating sleeve being shown in section,

" Figure 2 is a side elevation showingthe socket with thecasing removed,

Figure 3 is a view similar lto Figure 2 but particularly illustrating the mountingr ot the switch of the socket, l

Figure 4.- is a bottom plan view ofthe de vice,

Figure 5 is a perspective view showing the switch in detail, and

Figure 6 is a detail perspective view of the ratchet employed for actuating the switch.

1n carrying thel invention into effect, employ, in' constructing my improved socket, a base which is 'formed ot sections 10 and 11 respectively. These sections are in the nature of disks of insulating material and upstanding 'from the section 10 adjacent opposite sides thereof are posts 12. These posts extend through the section and, at their lower end portions, receive nuts 13 confronting opposite side faces of the section 'for firmly securing the posts in vertical position. At their `upper ends, the posts are formed with heads 14 which are normally received in suitable sockets in the lower face oi thesection 11 oi the base. Depending` 'from the section 11 are arms 15 provided at their lower end portions with laterally directed terminals 16 slidably receiving` the posts therethrough. One of said arms is se* cured to the section 11 by a binding post 17 engaging through the section while the other arm. is secured to said section by a screw bolt 18. As will beclear, the section 10 is thus slidably connected with the section 11 and bearing between the heads 14 oit the posts 12 and the terminals of said arms are helical springs 19 surrounding the posts and acting` to retract the section 10 and hold the section in normally retracted position. Connected to the sectionlO is a threaded shell 20 provided at its upper end with laterally directed lugs having the lower ends of the posts 12 engaged therethrough so that the shell is thus held by the lowerinost of the nuts 13 upon the posts and mounted upon the lower end portion of one ot said posts within the shell is a contact 21, this post and contact being insulated Jtrom the shell. The shell is ofcourse, designed to receive a lamp, as indicated in dotted lines at 22, to cooperate with .this contact. Surrounding the base and shell is an insulating sleeve 23 and enclosing said sleeve is a casing 24 closed.

at its upper end by a removable cap 25. As

will he best observed upon reference to Figure 1, the section 10 of the base as well as the shell 20 are freely received. within the lower end portion ol the sleeve so that these parts may readily shift within the sleeve.

lllounted upon the lower side of the section 11 oli' the base is a yoke 26 held by a screw bolt 27 and a bindingr post 28 engaged through the section. Journaled upon the arms oit' said yoke is a switch shaft 29 and fixed upon said shaft adjacent one end thereof is a switch Contact 30. Extending beneath this contact Jr`or engagement thereby is a fixed spring contact 31 secured at its upper end to the section 11 of the base by the screw bolt 18. Secured at one end by the screw bolt 27 is a flat spring 32 rebent to engage at its free end with the switch contact, the free end of said spring being formed with lateral lugs to bear against the contact. Fixed upon the shaft adjacent the end thereof opposite the switch contact is a ratchet disk As particularly shown inF Figure 6, this disk is formed from a piece of sheet metal slit at spaced points along radial lines to provide a plurality of segmental ratchet teeth slightly twisted axially so that lthe corresponding edges of said teeth extend laterally at the inner side of the disk; Freely mounted upon the shaft to coact with the disk 33 is a rotatable ratchet disk 34 out away at its inner side to providea plurality of segmental ratchet teeth' adapted to coopcrate with the ratchet teeth of the disk 33 and bearing between the disk 34. and the switch contact 30 is a helical spring 35 surrounding the shaft 29 and tensioning the disk 34 against the fixed disk.r Pvotally connected at one end to the disk 34 at a point adjacent its periphery is a link or pitman 36, the opposite end of which is secured to the section 10 of the base by a pin or otherk approved fastening device 37.

In practice, circuit wires are connected to the binding posts 17 and' 28 so that current will be supplied through the post 17, the adjacent arm 15 and post 12 to the contact 21.

The fixed contact 3l has, through the other post 12 and'arm 15, ground connection with the shell .2() whilst-he binding post 28 is in circuit with the switch contact 30 through the yoke 26 and shaft 29 as well as through the tensioning spring 32. Thus, assuming the parts to be in the position shown in Figures 1, 2 and 3 of the drawings, the lamp 22 may be grasped when, by pulling downwardly thereon, the section- 10 of the base will be shifted away from-the section 11` Thus, the ratchet disk 34 will, through the link 36, be caused to turn the disk 33 and consequently the shaft 29,11 quarter turn, so that the switch contact 30 will be moved into vertical position engaging the fixed contact 31 for closingv the circuit through the lamp. Upon the release of the'lamp, the tensioning ring 32 will prevent counter-rotation of t e shaft so that the ratchet disc 34 will consequently ride over the disk 33 as the section 10 is retracted by the springs 12. Conseuently, the switch will remain closed until t e llamp is again pulled downwardly when, as will be readily appreciated, the'ratchet disk 34 will again'cooperate with the disk 33 for moving the switch contact 30 to the position shown in the drawings out of engagement with the contact 31 to open position, when the lamp will be extinguished. It will accordingly be seen that I provide a socket wherein the lamp may be lighted or extinguished by simply'pulling downwardly thereon and while I have indicated that the lamp itself is grasped for operating the switch of the soc et, still, I do not wlsh to be limited in this regard as any approved means may be providedfrwithin the spirit of the 1nvention for shifting the section 10 of the base of the socket relative to the section 11 to operate the switch. I For instance, the shade of the lamp may be grasped, or the socket, and the switch thus operated while by suitably attaching a cord, pull upon the cord will serve to actuate the switch. Further, by removing the shell 20,attarhing a cord to the posts 13 and supplying a suit-ab casing and base, the switch may be used 1n a rosette. Also it ma placed between rosette and socket an by employing a suitable base in lieu of the capl 25, the switch ma be made into a receptacle.

vin thus described the invention, what is claims as new is: 1 1 1. An electric light-socket inciuding a sectional base, means -conneetin said sections whereby one section may be s ifted relative to the other, a yoke upon one section, a. shaft journaled upon said yoke, a switch contact carried by said dxaft, a ratchet disk fixed to vthe shaft, a ratchet disk free on the shaft and adapted to cooperate with the first disk, and a connection between the latter diskand the movable section of the base whereby the switch contact will be turned to open and closed position respectively when the movable section is shifted.

2. An electric light socketincluding a scctional base, means connecting the sections of the base whereby one section may be shifted relative to the other, a rotatable shaft carried by one section, a switch contact fixed to said shaft, a ratehetdisk fixed tothe and provided with teeth at onesidetheloof, a ratchet disk free on the shaft and provided at one side with teeth to with the teeth of the fixed disk,- yieldable means tensioning Athernovable diskA against the fixed disk, yieldable means holdxg the shaft against counter-rotation, and s; link extend ing between the movable sectinof the base and the movable ratchet disk whcrebythc switch contact will berotatedto open and closed position respectively when themovable section is shifted.

3. A device of the character described including a sectional hase, and yieldibhmeans including abutment members between the sections normally rholding saidt oetiuns in spaced relation and permitting reeiprccation thereof, c yole upm! onrof mid sections, a shaft jeurnated upon leid yoke, a. metallic block' xed upon the shaft and hving two narrow and two w'ide 8st sida, a ratchet disc fixed to the shaft, a 'mound ratchet disc free on the shaft, a forming an operative connection between' said dseand the othe1` of said sections, a spring to (zo-operate with the ia-t sides thereof for surroundin the shaft to bear between said yieldably locking the shaft, and a Contact block and tie free disc, holding the dises in mounted to co-operate with the narrow sides 3" engagement, whereby when the last menof said block.

5 tioned section is reciprocated, the Shaft will In testimony whereof I affix my signature.

be rotated turning said block, a spring bearing between the yoke and said block adapted MARVIN H. DAVIS. [1.. s] 

